Nathan Sproul is a noted Republican strategist[1][2][3] and political consultant for numerous election campaigns. Sproul is the managing director of Lincoln Strategy Group, an international political consulting firm based in Arizona. He is a former executive director of the Arizona Republican Party and the Arizona Christian Coalition. Lincoln Strategy Group has a presence in over 45 states in the U.S. and is known for its grassroots outreach work in issue advocacy and ballot access.

Nathan started his career as an intern for the Republican National Committee. In 1997, Nathan went to work for the Arizona Christian Coalition.

He served as the Executive Director of the Arizona Republican Party from 1999-2002.[5]

Nathan started his own firm, Sproul & Associates in 2004. Also in 2004, he worked with the effort of removing the Arizona Clean Elections law formed in the spring by Representative Jeff Flake, an Arizona Republican. The ballot initiative would have essentially repealed Arizona's Clean Elections campaign finance system. Sproul, was hired by No Taxpayer Money for Politicians to conduct a signature drive to get the anti-Clean Elections bill on the ballot. The initiative had an 84% validity rating (one of the highest in the state). It failed its single subject challenge, with Attorney Lisa Hauser representing the inititiative.[6]

In 2004, the voter registration firm Sproul & Associates defended itself from accusations that it was discarding the registration forms of Democrats after a past employee provided KLAS-TV with shredded forms and claimed this discarding was done as a matter of routine. Countering the allegation, Sproul & Associates proved that some Democratic voter registrations had been properly submitted.[10][11]